Rollable type window screen



P 17, 1946- V o. J. HOFFSTAD 2,407,784

ROLLABLE TYPE WINDOW SCREEN Filed Sept. 14, 1944 2 Sheets-Sheet l f v Dwell tor OLE J HOP/ 5774 0,

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W I I ttorneys Patented Sept. 17, 1946 ROLLABLE TYPE WINDOW SCREEN Ole J. Hofistad, Rahway, N. J., assignor of onehalf to August Bruns, Port Chester, N. Y.

Application September 14, 1944, Serial No. 554,014 2 Claims. (01. 160-273) This invention relates to window screens such as are adaptable for use in association with the windows of the ordinary double sash type, the invention having reference, more in particular,

'to a flexible rollable type screen, that is, one which wound on a spring-actuated drum or roller, whereby to permit it to be raised and lowered similarly to window and porch shades.

'In carrying out my inventive idea, I have had in mind the adoption and use of a structure which lendsitself admirably well for use on conventional window frames, the arrangement and designing of parts being such that the installation may be made either facing the exterior or outside of the dwelling, or facing the interior rooms.

More specifically, novelty is predicated upon the adoption and. use of simple and expedient pairs of vertical angle irons, these being provided with opposed and spaced flanges to thus provide tracklike guides, the longitudinal edges of the rollable flexible screen wire projecting between said guides and having spring contact clips functioning as shoes to guide and tautly maintain the screen as it is rolled up or down, as the case may be.

More explicitly stated, the present invention has to do with a screen which is adapted for use in a frame and on a roller with special stabilizing devices attached to opposite edge portions of the screen, these devices being arranged in longitudinally spaced relationship and each device actually made up of a pair of spring clips. The spring clips have their inner adjacent ends laterally bent and fastened to opposite faces or portions of the edges of the screen fabric, the adjacent portions of the clips, that, is the portions adjacent the screen being laterally bent and bowed to provide resilient guides and the free end portions of the clips constituting resilient retention shoes for coacting with parts of the framework.

Other features and advantages will become more readily apparent from the following description and the accompanying illustrative drawings.

In the drawings, wherein like numerals are em: ployed to designate like parts throughout the views;

Figure 1 is an elevational view, that is, a view observing the complete structure, the screen being partly elevated and the structure being seen as it appears from the outside of the building.

Figure 2 is a fragmentary sectional and elevational view of a screen winding and unwinding spring-equipped roller.

Figure 3 is an enlarged horizontal section rotated 90 counterclockwise, this taken on plane of the line 33 of Figure ,1,

. Figure 4 is a fragmentary 'elevational view detailing the clip-equipped longitudinal edge portion of the screen.

the

Figure 5 is a fragmentary horizontal sectional of the drawings, it may be pointed out that the invention, briefly comprehended, ischaracterized by pairs of coacting flanged angle irons, these mounted on anchoring plates on the window frame structure. The longitudinal edges of the raisable and lowerable flexible screen project into the guide tracks and-carry spring clips which slide up and down in contact with the angle irons. At the top of the structure is a casing orhousing having a spring wound roller and the screen is wound thereon.

Referring now to the drawings by distinguishing reference numerals, it will be observed that the structure is supported or mounted on the exterior of the window frame, the latter denoted generally by the numeral Il. As seen for example in Figure 3, the attaching devices are in the form of right angle plates l2 screwed or otherwise anchored in place. The inwardly projecting flanges of the plates [2 carry the aforementioned screen guide and retention tracks. Each track or trackway is made up of duplicate angle irons l3 and M, these being provided with laterally directed and spaced parallel flanges I5. As detailed in enlarged form in Figure 5, it will be observed that the inner edges or faces of these flanges 15 are provided with shallow grooves or runways IE to accommodate the curvate bends or shoe portions I! of the spring trackings and guide clips It. The adjacent longitudinal edges of the screen l9 project into the guide tracks and the laterally directed inner portions of the clips 18 are riveted or otherwise secured to the projecting screen edges, as indicated at 20 (see Fig, 5). As before stated, this idea of the special angle irons forming the guide tracks, and the spring clips I18 moving in said guide tracks and constituting slides and screen tautening shoes is an important phase of the invention.

I next call attention to the upper or overhead structure, this embodying a longitudinally elongated horizontally disposed box-like housing or casing of appropriate construction, the same indicated as 22 and containing a spring roller 28 and the screen being wound on said roller. Then, and as shown in Figure 2 of the drawings, the roller 26 is of a simple spring wound cylinder type and is provided with journals which are suitably mounted in adapter sockets 21 formed in the aforementioned casing structure.

I now call attention to the lower slidable end structure of the screen. This is characterized by a rigid wooden'or' equivalent horizontal bar 28 which forms a sort of false sill and this has its opposite end portion bifurcated with the furcations 29 straddling the track-forming angle irons I 3 and I4. The furcations are provided with suitably mounted anti-friction rollers 30 to facilitate raising and lowering of the screen in proper perpendicu lar order.

screen and window can be built in as an original installation.

A careful consideration of the foregoing description in conjunction with the invention as ilthe invention as claimed.

As before stated, and as diagrammatically indicated in Figure 6, the screen itself is made up of relatively rigid parallel rods or stout wires 43' connected together by highly flexible intersecting vertical wires 44. This forms a sort of latticelike structure having thefunctions of an ordinary wooden slat porch shade or screen. That is to say,

the structure is easily roll-able and yet suificient- Ely rigid to perform the desired results.

The structure herein shown and described has the advantage of operating like a window shade, whereby to permit the housewife to attend to cleaning duties and washing of windows with expediency. In the fall when screens are no longer needed, it is rolled up and left in that position until spring. The screen and its frame structure will preferably be made of rust-free metal for sake of longevity. The screen can be easily attached by-a few wood screws without any alteration to any type of window, and it can be placed on either the outside or inside of the windows of old houses. For new construction, the

I claim:

1. In a structure of the class described, a guide way for a screen of the class described made up of opposed parallel angle irons having flanges, the inner faces of said flanges being used to provide runways, a screen edge projecting between the flanges adjacent said runways, and. spring clips attached to said screen edge and having rounded portions workable in said runways.

2. As a component part of an assemblage of the class described and as a new article of manufacture, a screen adapted for use on a rollable screen assembly of the class described comprising a screen proper, and stabilizing devices attached to opposite vertical edge portions of the screen, said devices being arranged in longitudinally spaced relationship, each device comprising a pair of spring clips, said clips having their inner adjacent ends laterally bent and fastened to opposite surfaces of the edge portion of the screen, the portions of the clips adjacent said laterally bent ends being bowed to provide resilient guides, and the free end portions of the clips constituting resilient retention shoes.

OLE J. HOFFSTAD. 

